Refrigeration unit



c -2 1945- c. H. WALBERT V REFRIGERATION UNIT Filed Oct. 13, 1945 5 Sheets-Sheet 1 CH. Walbert 0c}. 23,1945; (3, H, WALBERT 2,387,484

I REFRIGERATION UNIT Filed Oct. 13, 1943 5 Sheets-Sheet 2 F ags. I

- gwuc/rvbcw C H. Wa leri.

Oct. 23, 1945.

c. H. 'WALB ERT 2,387,484 REFRIGERATION UNIT 5 Sheets-Sheet 3 Filed Oct. 13, 1945 C Walberl.

06h 1945- c. H. WALBERT REFRIGERATION I JNIT Filed Oct. 15, 1945 xlllllllllllllll |l 5 Sheets-Sheet 4 21 m czzwazbert.

0ct. 23, 1945. c. H. WALBERT 8 REFRIGERATION UNIT I Filed Oct. 13, 1943 5 Sheets-Sheet s Eocoooeoooocooooooooc? j-poooooouooooqoooooooj; ioooooooooouooooooooo 'oooo'oooooooocoooooooil EOOOUOOOOOOOOOOOODOUO OOOOOQOOOOOOOOOOOOQO:

73 art 0W v v Walbefi.

water reservoir which lies upon the bottom of the refrigerator food chamber and which communicates with a well which is open at its top and which lies under the screened bottom of the back or vertical ice chamber to receive therefrom water from the melting ice and condensate. ,This well has associated therewith means for filtering the water before it enters the cold water reservoir and also means for syphoning off water from the reservoir and well when necessary. 1 Hence this cold water reservoir forms a bottom shelf for the foodcompartment upon which may be placed meats or other articles of food which must be kept very cold. There is also associated with the bottom shelf constituting the cold water reservoir, a chamber forming unit which is open at its front to receive special articles such as bottles of milk, and which has an opening at the back arranged to coact with a cold air dischargingopening of the vertical ice cabinet or chamber whereby the cold air will enter into the special compartment and be confined therein so as to maintain bottles of milk or other products at the lowest possible temperature.

Another object of this invention is to provide a refrigeration unit designed to use all types of ice namely, block ice, crushed ice, sized ice, cube ice, flake ice, tube ice or what is termed snow ice in ice compartments without any changes in ice compartments whatsoever and by the use of the crushed, flaked, snow or other finely divided ice vegetables and fruits'may be embedded in the iceto protect the vitamin content of said fruits and vegetables without effecting refrigeration in a lower food compartment of the refrigerator.

Other objects and advantages of the present invention will become apparent as the description of the same proceeds and the invention will be best understood from the consideration of the following detailed description taken in connection with the accompanying drawings with the understanding, however, that the invention is not to be confined to any strict conformity with the showing of these drawings but may be changed or modified so long as such changes or modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure 1 is a view in front elevation of a refrigerator showing the refrigeration unit of the present invention in position therein. 7

Figure 2 is a view in front elevation of the unit removed from the refrigerator and having the ice drawers removed therefrom.

v Figure} is a vertical section of the line 33 of Fig. 2. v

Figure 4 is a top plan view of the structure of Figure 2. r

Figure 5 isa transverse section through the upper partof the unit with the middle portion of the back of the unit broken away, being substantially on the line 5-5 of Figure 3 and show ing portions of adjacent refrigerator walls and supporting brackets thereon.

Figure 6 is a horizontal section through the upper ice chamber of the unit as installed the section being on the line 6--6 of Figure Figure 7 is a detail section on the line !1 of Figure 6. i

Figure 8 is a top plan of the ice drawer per se.

Figure 9 is a view in front elevation of the ice drawer one side being sectioned on the .1116 8--9 of Figure 10;

Figure 10 is a sectional of Figure 8..

Figure 11 is a view in top plan of the condensation tray.

Figure 12 is a view in front elevation of the condensation tray with a portion sectioned substantially on the line l2l2 of Figure 11. a

Figure 13 is a section on the line [3-43 of Figure 11.

view on the line Ill- Figure 14 illustrate the condensation tray in side elevation and in installed position.

Figure 15 is a view in top plan of the cold water receptacle.

' Figure 16 is a view in side elevation of the cold water receptacle.

Figure 17 is a view in top plan of the removable milk compartment unit.

Figure 18 is a front elevation of the milk compartment.

Figure 19 is a side elevation of the unit with the top sectioned on the line IS -I9 of Figure'18.

Referring now more particularly to the drawings wherein like numerals of reference indicate corresponding parts throughout several views, the unit is here illustrated as being installed in a refrigerator cabinet of the type and size customarily used in homes but it is to be understood, of course, that its use is not so restricted as the invention is capable of application to commercial installations as well as domestic ones, andit may also be used in such structures as refrigerator cars or refrigerated trucks.

The housing cabinet is generally designated C and in the form illustrated has the usual upper or top compartment T and the lower or underlying food compartment generally designated F.

The door openings leading into these compartments are separated by the usualtransverse bar or'sill S.

- The structure herein disclosed is formed in two main-units which, while they are designed to be used together, they can under certain conditions, be used separately in different types'of installations. Such units are designated A and B, the unit A comprising the ice receiving and air circulating unit and the unit B comprising'a filter, water siphoning means and cold water reservoir.

The icing unit A' comprises an upper section A which forms the top ice chamber and a lower section A" which forms the lower ice chamber. The upper section or top ice chamber positions within the top chamber T of the ice cabinet and comprises the side walls [0 back wall H and bottom wall [2. As shown the back wall H ,extends all the way down to the bottom of the lower ice chamber A" and forms the back wall for such lower chamber and portions'of the side walls In, at the back of the unit, are extended downwardly as indicated at [0' to'provide the side walls of the lower ice chamber.

The overall width of the unit is such that when the unit is installed in the refrigerator cabinet there will-be provided at the sides and in the back an air circulation space I3.

At the vertical front edge of the side wall portion Hi there is provided the lateral flange M which engages the adjacent side wall I5 of the cabinet while the top edge of each side portion H! has a similar lateral flange l6 which engages the adjacent side wall I5 and th top edge of the back wall I I. has the outwardly extending flange H which engages the back wall I8 of the cabinet.

The side wall portions l0 and the back wall I I, have a series of air inlet apertures l9, formed therethrough in a line paralleling the adjacent edges and upon the lnner side of each side wall portionrand of the back. well there is formed an air; duct 20, having air admission openings 2! leadinginto the top ice chamber, such openings being controlled. by an .apertured side plate 22.

The lower ice chamber A! isrelative'ly shallow andliis of a. length to extendfrom the plane of the :sillcS nearly to the bottom of. the food compartment. The forward part of the lower ice chamber is closed by the front wall 23 and the sidewallsdt or the lower ice chamberare of slightly increasing width from the upper to the lowerends so that this lower ice chamber which in effect dorms a shallowthroatbetween the lower part of thewupperice chamber and the lower partof the food compartment, is of gradually increasing depth from the top to the bottom.

,I'hisfaci'litates the movement of ice downwardly through: the lower'i'ce chamber, particularly when suchwice input in, in the form ofbroken ice, crushed ice, :sizedlice, cu'be ice, tube ice, or snow.

As'zisiiclearly shown in Figure 3 the bottom wall desired; to prevent the flow of air therefrom.

These ports openinto the, top part of the food compartment. l f The wall 23 of the lower ice compartment is also provided. at the bottom with the cold air admissioniports .2 8, eachof which is covered by a hingedwdoor, or otherwise suitably movable,

screen 29.

The bottom of the lower ice compartment or chamber is covered or closed by the apertured or screened wall 30 whereby the escape of ice from the lower part of the lower ice chamber is prevented but. the cold air and water are allowed to pass through into the bottom of the food chambera Extendingvertically through and upon the vertical center ofthe unit, is a cold air duct which is.generallydesignated 3|. This duct divides the lowerice chamber into two sections and theupper andlower air ports, 25 and 28 open through the front wall of the ice chamber at the two sides of this vertical air duct. This air duct opens downwardly at its lower end into the food compartment and at its upper end it is provided with laterallydirected screened openings 32, through which warm air, which has risen from the food cabinetor chamber, may enter into the upper ice chamber. The airduct also serves the additional purpose of strengthening. the front and back .walls ll and 23.

i When the refrigeration unit is installed in the cabinet, any suitable means maybe provided for maintaining the unit suspended therein so that theqtoprlanges I6 and I! will be in close relation to ori in. contact with the top wall of the top compartmentli. A desirable means of suspending the unit may be providing an anglerbar 33 along the inner face of each side wall and. across the back wall or the cabinet in which the upper ice compartment is located, in close proximity to the topof suchcabinet asshown in Figure with one flange extending inwardly so asto have engaged opening,

thereover the adjacent side and back flanges l3 and 11 which form integral parts of the side and back walls of the upper ice compartment. With this arrangement the unit is firmly suspended in the refrigerator cabinet and air rising between the walls of the installed unit and the walls of the cabinet can pass through the apertures l9 and 2 I, when the slides 20 are properlypositioned, into the upper part of the upper ice compartment.

When the unit is installed in. the cabinet it is, of course, placed backas best seen in Figure 3, so that the front lateral flanges M will be Set back slightly from the edge of the adjacent door This allows for an air space at the front between the upper ice chamberand the front door of the refrigerator as hereinafter described.

At the forward or front edge of the bottom l2 ofthe upper. or top ice chamber, there is secured along the inner or back face of the sill S, the apertured plate 35, Figure '7. The apertures 35 of this plate may be closed when desired, by the employment of an apertured slide 31 so that the flow of air upwardly from the. food compartment may be shut off when desired. l

If desired, instead of using the apertured plate 35, and forming it as a separate unit to be secured against the hack of the sill S, the floor or bottom. 12 of the topice chamber may be extended and secured to the sill and such extended portion provided with air openings.

The numeral 38 generally designates a movable or lslidable drawer unit. This drawer unit comprises a bottom or floor 39 which rests upon the bottom l2 and which is joined at its sides with the short upstanding side walls 40 which position against the inner walls It]. These side walls 40 are extended inwardly beyondthe inner edge of the bottom 39, so that when the drawer is in position within the upper ice chamber: the inner or back edges of the side walls 40 will be in abutting relation-with back wall I I but the bottom 39 of the drawer will not be extended to the point where it will cover the screens 24.

The side walls ID of the top ice chamber have secured thereto the guides 4|, in each of which the top edge of a side wall 40 of the drawer slideably engages.

Hin'gedly secured as at 42 to the forward edge or the bottom 39 of the drawer is a two part door 43. This door is divided transversely to form the two sections 44 and 45, which sections are hingedly joined together so that they swing or oscillate on a horizontal axis. When the door 43 is in closed position the ends of the upper-section will bear against the faces of the vertical flanges "l4 to close the front of the top ice chamber.

As will bereadily apparent the drawer- 38, is designed to be shifted forwardly or. outwardly through the door opening for the top compartment T out of the cabinet and when so shifted the door 43 may be swung downwardly. The lower section 44 of the door is. designed, however, to be lowered only to a horizontal position and this action is obtained through the attachment to each side of the lower door section, of a hinged bracket rod 43 which at its inner endhas sliding connection with the adjacent side wall 40. There is also provided at each side of the lower door section 44, the arcuate win plate 41 which, when the door is dropped to open position, substantially forms an extention of the adjacent side wall 40 to prevent theescape lateral- 1y of loose ice which may be lying upon the bottom of the drawer.

The drawer 38 provides a convenient means for placing ice in the ice chambers as well as for effecting the removal of ice therefrom, and it also provides a guard to prevent ice, falling out of the chamber and also for preventing drippings from falling on the floor and down the front of the refrigerator.

When the drawer is in closed position and the door is shut, it will be seen that there will be a space 48, Fig. 7, between the front of the drawer and the cabinet door by which the opening leading to the top compartment is closed. When the slide 31 is in closed position with respect to the air openings 36 in the plate 35, then this space 48 becomes a dead air space to function as insulation means but if thelslide is in open position then air may circulate upwardly from the food compartment and such relatively warm rising air will pass out from the top compartment when the front door thereof is opened. V Disposedbehind the sill S and directly 'beneath the bottom wall I2, of the top ice chamher is a condensation collector tray which is indicated generally by the numeral 49. This con' densation tray comprises a bottom pan 5i] and an upper or top pan 5|. The bottom pan has extending alongeach side the upstanding flange 52, which is integral with a front upstanding flange 53 and the rearwardly directed side extensions 54. These side extensions 54, provide positioning means for the condensation tray, being designed to extend across the side walls of the lower ice'chamber as illustrated in'Figure 14. The inner or back edge of the bottom pan is spaced slightly from the front wall 23 of the lower ice chamber, when the condensation tray is in operative position, as shown in Figure 14 and such inner or back edge of the bottom pan has a short depending lip 50 integral therewith.

The top pan 5| is supported by suitable brackets 55 in spaced relation with the bottom pan and both the bottom and top pans have air vents or openings 56 therethrough each of which is covered by a hood 5'! which is supported by suitable brackets 58 in spaced relation with the underlying pan bottom.

The condensation tray is suspended for easy removal beneath the upper ice chamber in the following manner. There are secured to the front wall 23 of the lower ice chamber brackets 23' upon which rests the edge of the lip 56' as shown in Figure 14. At the front of the upper ice chamber the bottom wall has secured thereto, to extend transversely of the chamber, the hanging forwardly extending flange l2. This flange is in spaced relation with the slide 31 which is disposed beneath the apertured plate 35 and the top edge of the front upstandin flange 53 of the condensation tray has an inturned flange 53' which engages over the forwardly extending edge of the flange 12 as shown in Figures 7 and 14 so as to hang the front part of the condensation tray in position. Removal of the condensation tray is easily effected by lifting up the rear part of the tray to raise the lip 56 from the brackets 23 and then shifting the tray forward slightly to disengage the'flanges l2 and 53 condensation tray to pass out at the front and up through the'apertures 36; The condensation tray is positioned approximately one and onehalf inches below the bottom l2 of the upper or top ice chamber and functions toreceive or catch any moisture forming upon and dripping from such bottom wall and prevent the same from passing downwardly into the underlying food compartment. At the same time, by reason of the openings 56 covered by the raised hoods 51, the cold air from the overlyin ice chamber may pass down freely into the food compartment.

The bottom wall 12 of the upper ice chamber and the condensation pan are inclined downwardly toward the rear and thus water from melting ice and condensate collected inv the condensation pan; will be rapidly carried off.

The unit B comprises a relatively flat recep-.

tacle having top and bottom walls 60 and GI respectively and the front and side walls 62 and 63. Extending across the back of the unit-is an upstanding rectangular well 64 which is open at its top and which communicates with the interior of the front part of the unit. This structure forms a cold water reservoir. The overall width and length of the cold water reservoir is such that it fits'the width and depth of the bottom wall or floor of the food'compartment and the open top of the well lies directly beneath but is spaced from the open screened bottom of the lower ice chamber. It will thus be seen that the lower unit receives the ice water from the overlying ice chamber and it forms a refrigerated floor for the lower part of the food compartment upon which meats or other foods, which have to be kept very cold, may be placed. In order to facilitate the cleaning of the cold water reservoir and the more rapid transmission of cold to the top wall. 66 thereof, such top wall has secured to its underside a number of-metal fins 65.

Also associated with the bottom unitis a filtering unit which is generally designated 66 and which is formed preferably, though not necessarily, in two sections which fit in the top of the well.

There is also provided as a part of the lower unit B a siphon and drain valve unit which is generally designated 61. 7

No detailed illustration or description of the features of the lower unit 13 are given since these features are illustrated in and form the subject matter of copending applications Ser. Nos. 506,104 and 506,106, both filed October 13, 1943. While the well portion of the cold water reservoir forms in the combination with the refrigerating unit, a means for receiving condensate and water from the melting ice it will be readily apparent that other means may be readily provided for receiving such water and also it is contemplated to use the cold water reservoir in association with other refrigerating units as, for example, this reservoir may be used in a refrigerated car where, by suitably increasing the dimensions of the forward shallow portion of the unit, it may form a refrigerated floor for such structure.

As an auxiliary unit to the refrigeration unit there is provided a removable milk compartment which is generally designated 68 and whichis designed to rest upon the top of the cold water reservoir and to receive refrigerated air from the lower ice chamber through one of the screened doors or ports 28.

This milk compartment comprises a rectangular unit having the top and'bottom walls 69 and ages-mes.

m. respectively and. the walls: 1+ and; 12;.

. Formed. along. the; bottom wall; to: at. the. front edge and? along; the: front edsesa or. the side wall 1:21 and'itcp wall. to is wrflange 1.3. This flan e. canazserve: several: purposes: a First, the: lowerpart.

or thenange. l3. servesthrough contact. with the.

front. edge or the. cold; water: reservoir,. as; a. stop ion the millecompartmentz whenssit. is inserted. into the food chamber to rest upon the top. of

the cold watenreservoir... Secondthe. side port-ion' or the hanger whichis; integral with: the. wall;

the free circulation of ainthrough the topof the;

milk compartment;

The back: wall. of. the. millsoompartmenii is gem. orally. indicated by the numerall E8 and-this: is. provided with an opening: 1.9 aathelproper. height; to coi'ncide with. anair vent; 2 8,. when the milk compartmentitis place'dl in. position at one; side of the lower: portion of the food chamber; i

It thus be: seen: that: the; milk comparti-. merit substantially: forms; a part ot'the ice. unit, and by its use the cold air-flowing: downwardly through-the adjacentport. "Lean be concentrated? within the. milk compartment; around the. bottles-which maybe placed therein.

If" desired the bottom: wall it may be: eliminated or it may be removable. so that bottles of; milk or othenliquids placed within the.- compartment may rest directly upon the top or the cold water reservoir which ineffect. forms thebottom shel f or'ilooroi' the food chamber;

chamber: andhwill: enter" the upper or top. ice;

chamber by way of the ductsill: and the open-1 ings I31? and 2 i, being chilled. in. so. flowing, through contact with the outer sides of the walls; l; and. .I It. The. flow of; air circulating through the refrigerator can be controlled by means. 01' the various slides associated. with. the air aperl. turesland' in this way the melting of the ice can: be; controlled also. Thusby: closing" the apertures of? the. ducts 202 and the: apertures 36, and; also. by covering or closingthe upper ports 25 or the" lower ice chamber; the. meltingof. the ioemay be res. duced to a minimum, as would be desired the users oi: the. refrigeratorare; to: be away;

By: the provisiomor a: drawer for the ice, the; ice may be easily and? quickly drawn out. from theurefrigerator', or! the drawer may be merel pulled out part of the wa to permit easy icing of the chamber;

With the arrangement shown and described it will be readily seen also that the entire ice unit or refrigerating unit can be removed from the a refrigerator cabinet easily and quickly as the unitis; merelvsuspendect at its sides: and back. POD-L the; supporting: bracket previously rem ie'rred tot. l

Where; circular refrigerator: cabinets ar qeme plotted the upper: and lower ice. compartments may made circul r. in term and. to. revolve revolving: shelvesrall. supported. or suspendedthe: ton ofl the cabinet.

i. In a. reins-oration. structure oi the character stated. comprising; a. cabinet; providin acome pertinent the lower; part of. which forms; a food chamber... a. unit. designed for installation. in. the; compartment consisting 015 means; disposed above; the food; chamber part, for receiving. i0e,. door. means; associated. with. the: ice receiving means and facilitating; the introduction. of icethereinto, amelongated flat vertically disposed hollow struct re located the food; chamber and; openin at; its: upper end. int the ice receiving. means. and hail-"ms. it lower end closed a ainst the escape orice thereirom. and spaced from the bottom of the food chamber and opening. thereinta. means for receiving and carrying off its. water and condensate from the lower end of said; tru e ture: nd an air port. leading from the lower end of. such structure intothe food chamber.

2. A. refrigeration Structuraas set forth claim 1',,.with-. a. separate food storage: chamber formin structure in the. flood: chamber and disposed. against a. wall or said first structure-,. nd means. for directing cold air from the lower part. of h fi t tructure to said hamber forminestructune.

3.. A refrigeration structure-assetforth. in claim 1 inwhich said ice; chamber includes a. drawer like: unit; to which.- said, door is: attached, the drawer like unit and. the door being constructed. and arranged. to be drawn out from. the. ice: chamber.

4s A. refrigeration structure, comprising a. cab.- inet. providing; a compartment. the. lower part of which forms'a food chamber; and. an ice unit disposed within. the cabinet and. having an upper. icechamber positioned in the upper part oil the compartment and a-lowcr ice chamber extending from the bottom of the upper ice chamber down into the food chamber and terminating in close.- proximity; to the bottom of: the food chamber,. said lower; ice: chamber forming acshallow vertical throat. which opens, atits upper end. into the ice. chamber and which is: open. at its lower t e saidl wer end. or the. lower ice chamber having; a. ioraminous: covering. means thereover, a. wall of. the lower ice chamber having cold air ports. leading 'from. within the. lower chamber:

into the food, chamber; means for closing; certain of such ports, and. a door means closing. the entrance: tothe upper ice chamben.

5; A structure as set forth in claim 4, with means providing an. airspace around the outer side of the upper. ice chamber. and controlled communication means between said. space. at the t p. thereofi and thB OP: of: the interior or the. upper ice chamber.

6. In a retrigeration structure, a cabinet pro.-

viding a compartment the. lower part of which forms a. food chamber, a. refrigeration. unitcomprising. an upper ice chamber disposed in the. up; per part of said. compartment, said ice chamber having; side and back walls; lateral flanges extending along the vertical edges of the side walls and along the horizontal edges of the side Walls and the back wall and engaging adjacent walls of the compartment to maintain the ice chamber walls in spaced relation with the compartment walls whereby to provide an air circulation space around the ice chamber, valve controlled ports leading through said ice chamber walls at the top thereof from said air space, door means forming a removable front wall for theice chamber, means forming an elongated, relatively shallow, lower ice chamber extending downwardly from the lower part of the upper ice chamber and opening thereinto, said lower ice chamber at its lower end opening into thefood chamber in close proximity to the bottom thereof, means for carryingofi melted ice water and condensate from the ice chambers, and cold air ports leading from the lower ice chan'iber into the food chamber.

7. A structure as set forth in claim 6, including a condensation tray disposed beneath and spaced from the underside of the upper ice chamber, said condensation tray having an inner edge arranged for the discharge of condensate againstani adjacent wal1 of the lower ice compartmentto-flow down thereover, and being spaced at its sides from adjacent walls of the cabinet for the passage of air between said adjacent walls and the sides of the tray. i v r 8; A structure as set forth in claim 6, with means forming an air duct extending from the lower end of the lower ice chamber to the top of the upper ice chamber, said air duct opening at its lower end into the'food chamber and opening at its upper end into the top part of the upper ice chamber.

9. In a refrigeration structure, a cabinet providing a compartment the lower part of which forms a food chamber, door controlled openin s leading into the compartment, the cabinet having a sill .betweensaid openings, a refrigeration unit comprising an upperice chamber having bottom, side and back walls, an ice drawer disposed upon said bottom wall and having side Wallsslidably connected with the first mentioned side walls, a

hinged door connected with the bottom of said drawer for vertical opening and closing movement, said door, when in closed position, engaging the forward. edges of the first mentioned side walls when the drawer is in the ice chamber, said ice chamber being'disposedwithin the top part of said compartment, means forming an airspace around the sides. and back of the ice chamber between the latter and adjacent walls of the cornpartment, means for controlling the flow-of air from said airspace into the upper part of the ice chamber, a relatively shallow, elongated lower ice chamber disposed vertically in'the food chamber and opening at its upper end through the bottom wall of the upper ice chamber, the lower end .of the lower ice chamber being open and in close. proximity to the bottom of the food chamber, said lower ice chamber having a wall provided with cold air ports leading therefrom into the food chamber, the said upper ice chamber being so disposed in the compartment that when the door. of the drawer is closed an air space will be formed between such door and the door for the compartment, and means for controlling the flow ofair upwardly'from the food chamber to the last mentioned airspace. V V

10. Structure as set forth in claim 9, including a condensation receiving tray supported in spaced relation with andbeneath the bottom wall of the upper ice chamber such condensation tray havi-ng air openings leading upwardly, therethrough and further having an upstanding; flange at its forward edge in spaced relation'with'said sill, said flangehaving air openings sforme'd' therethrough, andlthe condensation tray having an'openingat its rear edge through: which condensate 'maybe discharged against atw'all of the: lower ice chamber to flow downwardly overpthesurface of such wall; a a e 1 a -11. Anlicingand cold aincirculating unit for, installation into a refrigerator compartment, comprising an 'ice receiving housing having .top,'bottom, side and back walls, a shiftable doorstructure constituting the front wall, a relatively long flat housing extendingdownwardly from said bottom wall at the back of the first housing, the back wall of: the first housing being extended to form the back wall of the flat housing, thelower part of theflat housinghaving a foraminous closure wall, and cold air venting openings leading from the front of the flat housing. 4

12. A unit of the character setforthin claim 11, in which'saidbottom wall slopes downwardly and 'rearwardly for the, discharge of water therefrom into the fiat housing.

' 13. A unitlas set forth in claim 11, with a hollow division wall extending upwardly through the fiat housing and through the first housing, said division wall being open at its lower end andhaving vents at itsupper end discharging into the upper part of the first housing.

14. A unit as set forth in claim 11, with a sliding floor disposed upon the bottom wall and having upstanding side portions, said sliding floor and side portionsv being connected with the door carryingthe latter whereby the sliding floor, side portions and doorprovldeya shiftable'ice carrying 15; A unit-as set forth in claim 11, with laterally projecting positioning flanges extending along the vertical front edges of said side walls and along'the top edges of the side walls and the back wall, and valve controlled vent openings formed through the top of the side walls.

16. A unit, as set forth in claim ll, with a depending flange secured to the bottom wall across the front edge thereof, a bracket flange secured across the forward side of the flat housing in spaced relation with the underside of the bottom wall, 'a drip pan formedxto position beneath the bottom wall and having an inner down-turned edge portionv adapted for engagement upon the bracket flange and an upstanding inwardly turned lip extending across the forward edge of the drip pan for detachable engagement with the first flange.

17. A unit as set forth inclaim 11, with a depending flange secured across the bottom wall at the forward edge thereof, a bracket flange secured across the forward side of the flat housing in spaced relation with said bottom wall, a drip pan adapted to position beneath the bottom wall and having a down-turned flange along its inner edge adapted to engage upon the bracket flange, an upstanding in-turned flange formed across the front edge of the drip pan for detachable connection with the first mentioned flange, and side arms forming continuations ofthe side edges of the drip pan and spaced'apart to receive the flat housing therebetween.

CHARLES H. WALBERT. 

